1.4.0

• Add --quiet flag (PR #947)
• Add option to dump PEP 517 metadata with --metadata (PR #940, PR #943)
• Support UV environment variable (PR #971)
• Remove a workaround for 3.14b1 (PR #960)
• In 3.14 final release, color defaults to True already (PR #962)
• Pass sp-repo-review (PR #942)
• In pytest configuration, log_level is better than log_cli_level (PR #950)
• Split up typing and mypy (PR #944)
• Use types-colorama (PR #945)
• In docs, first argument for _has_dependency is a name (PR #970)
• Fix test failure when flit-core is installed (PR #921)